Convertible chair.



H. J. DAVIDSON.

CONVERTIBLE CHAIR.

APPLIOATION FILED AUG. 7, 191a.

Patented Oct. 20, 1914.

anew;

Wiimaoom S I v /15 NORRIS PETERS c0. FHOTOYLITHOH WASHINGTON. D (7.

HARRY J. nAvIDsoiv, or -CHICAG0,.ILLI1\TOIS.

convnnrinnn (11min.

To all whom it may concern:

Be it known that I,'HARRY J DAVIDSON, a citizen of the United States, residing at Chicago, in the county of. Cook and State of Illinois, have invented certainjnew and useful Improvements in Convertible Chairs, of which the following is a specification.

This invention relates to chairs which are convertible, and its object is to provide a chair which is convertible into an osteo paths operating table or cot.

The invention also has for its object to provide a structure which makes a comfortable chair, and which is devoid of complicated parts and can easily be converted into the table or cot.

These objects are attained by means of a novel combination and arrangement of parts to be hereinafter described and claimed, reference being had to the ing, in which Figure 1 is a perspective view showing the chair. Fig. 2 is a perspective view showing the chair converted into a table or cot. Fig. 3 is a detail in perspective showing the means for operating the armrests. Fig.4- is an inverted plan view of one of the arm rests showing a spring connection for swinging the same outward into normal position.

Referring specifically to the drawing 5 denotes the seat and 6 the legs of the chair, the parts being rigidly connected in any suitable manner. The arm rests are in two sections, viz: a front section 7 and a rear section 8. The rear sections are rigidly secured to the rear legs, and the front sections are pivoted, as indicated at 9, to said rear sections to swing in a horizontal plane. The back rest comprises two sections 10 and 11, respectively, which are connected at the top by hinges 12. The section 10is reduced in width at its bottom so that it may come between the rear ends of the arm rest sections 8, to which latter it is pivoted,as indicatedat 13, to swing in avertical plane. The section 10 is behind the section 11, and said section 10 is also reduced in width at its lower end to come between the arm rest sections 8. The seat and backrest are suitably upholstered. A rod 14: passing through the upper ends of the rear legs and extending therebetween in front of the back rest, serves to prevent the latter from tilting rear ward.

accompanying draw- The structure herein described provides a l Specification of Letters Patent. Pigmented O t; 20, 1914; Application filedAu'gust'Y, 1913.. seriaiivo. 783,593 a:

void .of complicated parts. I l

When the chair isto be converted into a table or cot, the; rod 14 is removed and the back rest sections 10 "and 11 are unfolded and swung forward until the section 10 rests on. the armrest sections 7 The backrest =sect1ons are then horizontal and in alinement. The section 11 rests partly on the arm rest sections 7, and is propped up by i As the arm rest sections 7 are pivotedto swing horizontally, they may be tucked in under the unfolded back rest sections.

Means are provided whereby the arm rest sections 7 are automatically swung inward when the back rest sections 10 and 11 are unfolded and swung down into horizontal position, which means will now be described.

To each arm rest section 7, on the under side thereof, and near the pivot 9, is secured a plate 19 having a depending lug to which is connected a crank arm 20 on one end of a rod 21 extending in the direction of the length of the section 7, and journaled for rocking movement in bearing apertures 22 made in the rear leg 6. The other end of the rod has another crank arm 23, parallel to the crank arm 20 and terminatingin an oblique bend 24: which extends in front of the back rest section 10, a short distance above the pivot 13.

In operation, when the back rest is unfolded, the section 10 strikes the bend 24: and thereby rocks the rod 21, whereupon the crank 20 causes the arm rest section 7 to swing inward. It will be understood, v of course, that each arm rest section 7 is equipped with the herein described operating'means. Normally, the arm rest sections 7 are held outward by small coiled springs 25. fastened at one end near the top of the front legs 6, and at the other end beneath the inner edge of Morris chair w ich is comfortable anddesaid sections. The tendency ofthe springs a is to draw the sections 7 outward to their normal position, and said sections are drawn in only when the chainis converted into the table or cot.

I claim: 1,.- A chair having arm rests which are pivoted to swing in a horizontal plane,-a pivotedvback rest adjustable into horizontal position, and means actuated by the back rest for swinging the arm rests inward when the back rest is swung to horizontal position.

2. A chair having arm rests which are pivoted to swing in a horizontal plane, apivoted back rest adjustable into horizontal po- Copies of this patent may be obtained for S. J. LEHRER, H. G. BAToHnLoR.

five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

